Effect of dispersal in two-patch environment with Richards growth on population dynamics

Dublin Core

Contributeur

[aucun texte]

Couverture

[aucun texte]

Créateur

Description

In this paper, we consider a two-patch model coupled by migration terms, where each patch follows a Richards law. First, we prove the global stability of the model. Second, in the case when the migration rate tends to infinity, the total carrying capacity is given, which in general is different from the sum of the two carrying capacities and depends on the parameters of the growth rate and also on the migration terms. Using the theory of singular perturbations, we give an approximation of the solutions of the system in this case. Finally, we determine the conditions under which fragmentation and migration can lead to a total equilibrium population which might be greater or smaller than the sum of two carrying capacities and we give a complete classification for all possible cases. The total equilibrium population formula for a large migration rate plays an important role in this classification. We show that this choice of local dynamics has an influence on the effect of dispersal. Comparing the dynamics of the total equilibrium population as a function of the migration rate with that of the logistic model, we obtain the same behavior. In particular, we have only three situations that the total equilibrium population can occur: it is always greater than the sum of two carrying capacities, always smaller, and a third case, where the effect of dispersal is beneficial for lower values of the migration rate and detrimental for the higher values. We end by examining the two-patch model where one growth rate is much larger than the second one, we compare the total equilibrium population with the sum of the two carrying capacities.

Langue

Titre

Autre forme de titre

[aucun texte]

Résumé

[aucun texte]

Table des matières

[aucun texte]

Date de disponibilité

[aucun texte]

Date de création

[aucun texte]

Date d'acceptation

[aucun texte]

Date du copyright

[aucun texte]

Date de soumission

[aucun texte]

Date de parution

[aucun texte]

Date de modification

[aucun texte]

Date de validité

[aucun texte]

Droit d'accès

[aucun texte]

Licence

[aucun texte]

Est conforme à

[aucun texte]

A pour autre format

[aucun texte]

A comme partie

[aucun texte]

A d'autres versions

[aucun texte]

Est un autre format de

[aucun texte]

Est une partie de

[aucun texte]

Est référencé par

[aucun texte]

Est remplacé par

[aucun texte]

Est requis par

[aucun texte]

Est une version de

[aucun texte]

Référence

[aucun texte]

Remplace

[aucun texte]

Requiert

[aucun texte]

Étendue de la ressource, taille, durée

[aucun texte]

Support

[aucun texte]

Référence bibliographique

[aucun texte]

Couverture spatiale

[aucun texte]

Couverture temporelle

[aucun texte]

Méthode d’abonnement

[aucun texte]

Périodicité d’acquisition

[aucun texte]

Politique d’acquisition

[aucun texte]

Public visé

[aucun texte]

Niveau public destinataire

[aucun texte]

Médiateur

[aucun texte]

Méthode d’enseignement

[aucun texte]

Provenance

[aucun texte]

Ayants droit

[aucun texte]

Embed

Copy the code below into your web page